Pipe-cutting tool.



S. MORELLI.

. PIPE GUTTING TOOL.

APPLICATION FILED DEO.24, 191s.

1,100,760. Patented June 23, 1914.

Jdmw/ 222mm.

abfozuu o UNITED STATES PATENT OFFICE.

SAMUEL MORELLI, OF LEETONIA, OHIO.

PIPE-CUTTING TOOL.

Application filed December 24, 1913.

To all whom it may concern:

Be it known that I, SAMUEL MonELLr, a citizen of the United States,residing at Lee tonia, in the county of Columbiana and State of Ohio,have invented certain new and useful Improvements in Pipe-Cutting Tools,of which the following is a specification.

My invention relates to improvements in pipe cutting tools in whichthere is employed a series of cutting disks and anti-friction rollersdesigned to be rotated by means of a shaft.

The objects of the present invention are, first, to provide a toolwhereby the cutting disks are fed outward from the axis of the rotatingshaft from time to time, second, to provide means whereby the tool canbe adjusted with reference to the tube designed to be cut, and third, tohold the tool in proper parallel relationship with reference to the tuberegardless of the size or diameter designed to be cut. These objects,together with other objects readily apparent to those skilled in theart, I attain by the construction illustrated in the accompanyingdrawings, although my invention may be embod ied in a variety of othermechanical forms, the construction illustrated being chosen by way ofexample.

In the accompanying draWingFigure 1 is a longitudinal section showingthe tool placed in position for use. Fig. 2 is a face view of the restor gage holding disk. Fig. 3 is a view of the cutting disk, showing thecutters and their parts in proper relationship with reference to thedisk. Fig. 4 is a detached view of one of the rests or gages. Fig. 5 isa face view of the cutter expanding disk. Fig. 6 is a face view of thesteadying disk and its different parts. Fig. 7 is a face view of thesteadying disk showing the rollers and bars detached. Fig. 8 is a faceView of the cutter carrying disk, showing the cutters removed.

Similar numerals of reference indicate corresponding parts in all thefigures of the drawing. 7

In the accompanying drawing, 1 represents the tube designed to be cut,showing the same properly connected to a boiler end or head 2, thearrangements of the boiler end or head being shown conventionally. Theactuating shaft 3 is formed of any desired length, reference being hadto convenience in use, which shaft is rotated in any well known mannerand for light work an ordinary crank may be attached to theSpecification of Letters Patent.

Patented June 23, 1914.

Serial No.j808,607.

angled end 4 or an actuating bar may be placed through the aperture 5 orany other means may be employed to rotate the shaft 3. Upon the shaft 3is located the cutter disk 6, which cutter disk is held in position uponthe shaft 8 by means of the set screw 7 or its equivalent. The cuttingdisk 6 is provided with the radial grooves 8, which grooves are for thepurpose of receiving and holding the cutter bars or blocks 9, whichcutter bars or blocks are slidably mounted in the groove 8. To the barsor blocks 9 are journaled the cutting disks 10, which cut ting disks areof the usual construction such as are commonly used for producing asheer cut when in contact with the material designed to be acted upon.

Upon the shaft 8 is rotatably mounted the hollow shaft 11, to whichhollow shaft is attached by screw threads or otherwise the feed wheel12, which feed wheel is of the usual construction and is to be actuatedin si'lbstantially the same manner as the feed wheel to an ordinary andcommon drill, such as used in machine shops. The hollow shaft 11 isprovided with the cutter expanding disk 13, which may be formed integralwith said hollow shaft or it may be made separate and attached in anyconvenient and well known manner. The working face of the disk 13 isprovided with the spiral groove 14, which spiral groove is for thepurpose of receiving the ribs 15 formed upon the cutting bars 9, saidribs being curved to correspond with the curvature of the spiral grooveand of such a size that they will properly fit in the spiral groove.Upon the hollow shaft 11 is located the disk 16, which disk is providedwith the elongated slots 17, which slots are for the purpose ofproviding means for adjustably connecting the rest or gage bars 18,which rest or gage bars are also provided with the slots 19, theslotted. member and the rest member being located at substantially rightangles to each other as illustrated in Figs. 1 and 4:.

It is well understood that boiler tubes and other tubes are formed ofvarious sizes and in some instances it may be desirable to adjust thegage or rest proper to properly adjust the tool for use. By providingmeans for adjusting the rest or gage members 18 in a radial direction Ican provide for the proper connection of the rest or gage regardless ofthe size of the tube proper to be cut to the limit of the adjustment ofthe rest or gage, said gage or rest members being 50 bars or blocksoutward thereby providing held in fixed adjustment by means of the.clamping bolts 18 which adjustment should be sufiicient for the varioussizes of tubes in general use.

1 Upon the hollow shaft 11 is located the collar 20, which collar is forthe purpose of holding the shaft 3 and the hollow shaft 11 againstinward endwise movement, said collarwhen properly adjusted and held infixed adjustment by means of the set screw 21 will abut against the disk16 and thereby hold'the cutting disks 10 together with their differentparts in proper predetermined positions.

It will be understood that by adjusting the collar 20 to and from thewheel 12 the cutters 10 can be adjusted so as to cut the tube at anydesired distance from the end of the tube. In some instances it may bedesirable to'cut the tube, say one inch from the end of the tube and inother instances two or three inches and by adjusting the colv 'lar 20and afterward adjusting the tool the tube will be cut at the desiredpoint. It is well understood that there should be no wabbling movementof the shaft 3 during the time the pipe is being cut and in order toprovide means for preventing any wabbling the rollers 22 are provided,which rollers are so located that they will roll v upon the innersurface of the tube.

For the purpose of providing for the proper holding of the shaft 3 withreference to different sized tubes, the rollers 22 journaled in the adjustable carrying bars 23, which carrying bars are adjustably attached tothe disk 24:, which disk is mounted upon the inner end of the shaft 3.The rollers 22 are held in proper adjustment by means of the clampingbolts 25.

. It is well understood thatmeans must be provided for moving thecutting disks 10 outward during the time of the cutting action and inorder to provide for what might be termed feeding the cutting disks thefeed wheel 12 is provided, which feed wheel when rotated will rotate thehollow shaft 11, which in turn rotates the disk 13 and by means of thespiral groove the rotation of said disk will move the cutting diskcarrying for the proper cutting of the material designed to be out. Itis understood that in boiler tubes, especially the thickness of themetal is not great and hence the outward 1 radial movement of thecutting d-isks will not be for any great distance, simply to movethesameoutward after-they have been i adjustedfor cutting-action adistanceequal tothe thickness of themetal fromwhich the pipes arecomposed or made up.

' For thepurposeof preventing any pivotal movement of i the rollercarrying bars- 23,

the disk 24 should be provided with grooves 24* so that any frictionalcontact of the rollers upon the surface of the tubes will not have atendency to rock the roller carrying bars. By providing the grooves 2 1a single clamping bolt for each pair of bars will hold said bars infixed positions after they have been adjusted and the rollers broughtinto position for contact with the inner surface of the tube. In someinstances it may be desirable to drive the shaft carrying the cutters bymotive power, other than manual power and in such cases the shaft can berotatably coupled to an electric motor or other source of power.

Having fully described my invention what I claim as new and desire tosecure by Letters Patent, is-

1. In a device of the character described, the combination of a shafthaving fixed thereto and rotatable therewith a disk, said disk providedwith radial grooves, bars located in the grooves of the disk, said barsprovided with ribs, cutting disks carried by the bars, a hollow shaftmounted upon the shaft provided with the cutting disk, a. disk mountedupon the hollow shaft, said disk provided with a spiral groove, saidspiral groove adapted to move the cutting disk bars endwise, a disksecured to the inner end of the shaft, said disk provided with adjustable bars, anti-friction rollers journalcd in said bars and means forholding the adjustable bars in fixed adjustment, a disk locatedconcentric with the hollow shaft, said disk provided with radialelongated slots, gage members adjustably connected to said disk, saidgage members adapted for abutment against a boiler head and a collarlocated upon the hollow shaft and adapted for contact with the diskprovided with the gage arms, substantially as and for the purposespecified.

2. In a device of the character described, the combination of a shafthaving fixedly mounted thereon a disk provided with radial grooves, barsprovided with cutting disks, said bars slidably mounted in the grooves,a hollow shaft rotatably mounted upon said firstmentioned shaft, andmeans for moving the slidable bars endwise, a slotted disk mounted uponthe hollow shaft, gage bars adjustably connected to said disk and an adjustable collar adapted to abut against the disk carrying the gagebars.

In testimony that I claim the above, I have hereunto subscribed my namein the presence of two witnesses.

SAMUEL MORELLI.

VVit-nesses IV. E. WARREN, -J. STRATTON.

Copies ofi th is patent'may be obtained for five cents each, byaddressing the Commissioner of Patents. Washington, D. G.

